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tikzlings-bears.sty
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% !TeX root = ./examples/bear.tex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% This package is part of the TikZlings package
% A package to bring cute little animals and other beings into tikz
% Maintained by samcarter
%
% Project repository and bug tracker:
% https://github.com/samcarter/tikzlings
%
% Released under the LaTeX Project Public License v1.3c or later
% See http://www.latex-project.org/lppl.txt
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ProvidesPackage{tikzlings-bears}[2021/03/17 version v0.5 Draw teddy bears in TikZ]
\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}
\newcommand*{\bear}[1][]{%
\begin{scope}%
\tikzset{/bear/.cd,#1}%
\bear@draw%
\end{scope}%
\thing[#1]%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname bearhookforeground\endcsname
\csname tikzlinghookforeground\endcsname
}
\newif\ifbear@threeD
\newif\ifbear@back
\newif\ifbear@contour
\tikzset{
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Pass unknown keys on to tikz
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
/bear/.search also={/tikz,/pgf,/thing},
/bear/.cd,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% body
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
body/.code = \def\bear@body{#1},
body = brown,
eye/.code = \def\bear@eye{#1},
eye = \bear@body!30!black,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% options
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3D/.code = \bear@threeDtrue,
back/.code = \bear@backtrue,
contour/.code = \bear@contourtrue
\def\bear@contour{#1},
contour/.default = black,
outline/.forward to = /bear/contour,
}
\def\bear@draw{%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% minimal bounding box size
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\path (-0.8, 0.0) rectangle (0.8, 2.13);
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% store the current scale factor
% from https://github.com/samcarter/tikzlings/issues/3#issuecomment-461373494
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\pgfgettransformentries{\tmpscaleA}{\tmpscaleB}{\tmpscaleC}{\tmpscaleD}{\tmp}{\tmp}%
\pgfmathsetmacro{\scalingfactor}{sqrt(abs(\tmpscaleA*\tmpscaleD-\tmpscaleB*\tmpscaleC))*sqrt(abs((\pgf@xx/1cm)*(\pgf@yy/1cm)-(\pgf@xy/1cm)*(\pgf@yx/1cm)))}%
\pgfmathsetmacro{\xscalefactor}{\tmpscaleA}
\pgfmathsetmacro{\yscalefactor}{\tmpscaleD}
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% switch between 2D, 3D and contours, from
% https://chat.stackexchange.com/transcript/message/45991801#45991801
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifbear@threeD
\def\bear@part@draw[##1]{\shade[ball color=##1]}
\else
\ifbear@contour
\def\bear@part@draw[##1]{\draw[##1,\bear@contour,fill=white,line width=\scalingfactor*0.4pt]}
\else
\def\bear@part@draw[##1]{\fill[##1]}
\fi
\fi
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Body parts (center: x=0.925)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname bearhookbackground\endcsname
\csname tikzlinghookbackground\endcsname
%
% Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@body!70!black] (0.525,0.9) ellipse[x radius=0.35, y radius=0.15, rotate=-50];
\bear@part@draw[\bear@body!70!black] (-0.525,0.9) ellipse[x radius=0.35, y radius=0.15, rotate=50];
%
% Feet if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifbear@back
\bear@part@draw[\bear@body!70!black] (0.425, 0.3) circle[radius=0.28];
\bear@part@draw[\bear@body!70!black] (-0.425, 0.3) circle[radius=0.28];
\fi
%
% Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@body!70!black] (0,0.75) ellipse[x radius=0.55, y radius=0.65];
\ifbear@back\else
\bear@part@draw[\bear@body!50!white] (0,0.7) ellipse[x radius=0.35, y radius=0.4];
\fi
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname bearhookbelly\endcsname
\csname tikzlinghookbelly\endcsname
%
% Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifbear@back\else
\bear@part@draw[\bear@body!70!black] (0.425, 0.3) circle[radius=0.28];
\bear@part@draw[\bear@body!70!black] (-0.425, 0.3) circle[radius=0.28];
\bear@part@draw[\bear@body!50!white] (0.425, 0.3) circle[radius=0.17];
\bear@part@draw[\bear@body!50!white] (-0.425, 0.3) circle[radius=0.17];
\fi
%
% Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@body!70!black] (0.375, 1.95) circle[radius=0.15];
\bear@part@draw[\bear@body!70!black] (-0.375, 1.95) circle[radius=0.15];
\ifbear@back\else
\bear@part@draw[\bear@body!50!white] (0.375, 1.95) circle[radius=0.1];
\bear@part@draw[\bear@body!50!white] (-0.375, 1.95) circle[radius=0.1];
\fi
%
% Head %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@body!70!black] (0, 1.55) circle[radius=0.5];
%
% Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifbear@back\else
%
% Muzzle %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@body!50!white] (0, 1.4) ellipse[x radius=0.28, y radius=0.2];
\bear@part@draw[\bear@body!70!white!80!red] (0, 1.5) ellipse[x radius=0.15, y radius=0.08];
%
% Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bear@part@draw[\bear@eye] (-0.155, 1.7) circle[radius=0.05];
\bear@part@draw[\bear@eye] (0.155, 1.7) circle[radius=0.05];
%
% Mouth %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifbear@contour
\draw[\bear@contour,line width=\scalingfactor*0.4pt] (0.145, 1.38) arc [start angle=-20, end angle=-160, radius=0.16];
\else
\draw[\bear@body!30!black,line width=\scalingfactor*0.4pt] (0.145, 1.38) arc [start angle=-20, end angle=-160, radius=0.16];
\fi
%
\fi
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname bearhookbody\endcsname
\csname tikzlinghookbody\endcsname
%
}